call_enable_modules
Description:
Asynchronously invokes the EnableModules D-Bus method on this.
 When the operation is finished, callback will be invoked in the thread-default main loop of the thread you are calling
      this method from. You can then call call_enable_modules.end to get the result of the operation.
See call_enable_modules_sync for the synchronous, blocking version of this method.
Parameters:
| this | 
           A ManagerProxy.  | 
      
| arg_enable | 
           Argument to pass with the method invocation.  | 
      
| cancellable | 
           A Cancellable or   | 
      
| callback | 
           A TaskReadyCallback to call when the request is satisfied or   | 
      
| user_data | 
           User data to pass to   |